Question

Balance the equation, if necessary, for the reaction between iron and oxygen.
Fe + O₂ → Fe₂O₃

Answer 1

4Fe + 3O₂ → 2Fe₂O₃
That is the balanced question

Answer 2

`4Fe+3O_2\rightarrow 2Fe_2O_3`

Step-by-step explanation:

The unbalanced reaction of the reaction between iron and oxygen is shown below as:-

`Fe+O_2\rightarrow Fe_2O_3`

On the left hand side,

There is 1 iron atom and 2 oxygen atoms

On the right hand side,

There are 2 iron atoms and 3 oxygen atoms

Thus,

Right side,
`Fe_2O_3` is multiplied by 2.

Left side,
`O_2` must be multiplied by 3 and
`Fe` by 4 so to balance iron and oxygen.

Thus, the balanced reaction is:-

`4Fe+3O_2\rightarrow 2Fe_2O_3`